iPhone Application UUID Changes When I Update

[Yoh Suzuki]

Hello,

On the iPhone, I am copying the image taken using Camera.getPicture
into application storage so that it isn't in the temp directory. It
goes to a directory inside the following sort of path /var/mobile/
Applications/UUID/Documents/....

However, when I install over the top of my application (updating the
app so the localStorage is the same as before), the app gets a new
UUID. I no longer have access to the previous directory that my
images were saved to.

Is there a place to put my images that are more global or permanent?

Can I stop the app UUID from changing when I update?

When I get this app in the App Store, will the UUID no longer change
when I update?

Thanks!

Yoh

[Shazron]

Not quite following you - unless you store this hard-coded path
somewhere it shouldn't matter - you get the Documents directory etc
dynamically through the File API, and only store a relative path

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[Yoh Suzuki]

I'm storing the new image path so I can use the image later.  I copied it out of the temp directory where Camera.getPicture puts it, into my application documents folder.

But when I update my app, the app's UUID changes.  I no longer have access to the image because the image is in the old app's documents folder.

- y

--

Yoh Suzuki, Developer

www.clicktime.com | ysu...@clicktime.com

[Shazron]

If you could read my last email again. You should only store the
relative path of the image in Documents, and get the Documents folder
path dynamically.

[Yoh Suzuki]

Oh.  You're saying that the old image will get copied over into the new app documents directory when I install over top?  - y

[Shazron]

Yes, an upgrade should preserve your Documents folder, if not there
would be angry app users everywhere if they have to recreate all their
data...

[Yoh Suzuki]

Shazron, you are the best!  Using the knowledge you dropped on me, everything works!  Thank you!  :D:D:D  - y

[문성욱]

Hello. I just saw your email thread.

We have similar problem on our IOS APP.

We used UUID for maintaining user session for a while. But, recently, we found it changes on updating to new app version.

Because of that, our users lost their login session after updating. 

Do you know why does it change?

And do you know how we can find old UUID in new app version?

It would be really helpful, if you give me answer.

Thank you so much.

Reagards,

Moon.

[Jesse Monroy]

@문성욱,
This thread if over 3 years old. Please start a new thread with your issue.
Thanks
Jesse

[mharr]

This has been the case for iOS apps since iOS 6.  See Apple's developer reference: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIDevice_Class/#//apple_ref/occ/instp/UIDevice/identifierForVendor